SAN Volume Controller 2145-DH8 light path diagnostics panel

View the controls and light-emitting diodes (LEDs) on the light path diagnostics panel. The light path diagnostics LEDs remain lit only while the server is connected to power.

To access the light path diagnostics panel that is shown in Figure 1, press the release latch on the front of the operator information panel.

Figure 1. SAN Volume Controller 2145-DH8 light path diagnostics panel
SAN Volume Controller 2145-DH8 light path diagnostics panel
Table 1 lists the LEDs on the light path diagnostics panel, and the suggested actions to be taken.
  • Follow the suggested actions in the order in which they are listed in the Action column until the problem is solved.
  • If an action step is preceded by "(Trained technician only)," that step must be performed only by a trained technician.
Table 1. SAN Volume Controller 2145-DH8 Light path diagnostic LED actions
LED Description Action
Check log LED An error occurs and cannot be isolated without performing certain procedures.
  1. Check the IMM2 system event log and the system-error log for information about the error.
  2. Save the log if necessary and clear the log afterward.
System-error LED An error occurred.
  1. Check the light path diagnostics LEDs and follow the instructions.
  2. Check the IMM2 system event log and the system-error log for information about the error.
  3. Save the log if necessary and clear the log afterward.
PS (power supply) When only the PS LED is lit, a power supply failed. The system might detect a power supply error. Complete the following steps to correct the problem:
  1. Check the power-supply with a lit yellow LED.
  2. Make sure that the power supplies are seated correctly and plugged in a good AC outlet.
  3. Remove a power supply to isolate the failed power supply.
  4. Make sure that both power supplies installed in the server are of the same AC input voltage.
  5. Replace the failed power supply.
PS + CONFIG - When both the PS and CONFIG LEDs are lit, the power supply configuration is invalid. If the PS LED and the CONFIG LED are lit, the system issues an invalid power configuration error. Make sure that both power supplies installed in the server are of the same rating or wattage.
OVER SPEC The system consumption reaches the power supply over-current protection point or the power supplies are damaged.
  1. If the power rail (A, B, C, D, E, F, G, and H) error was not detected, complete the following steps:
    1. Use the available power configuration tools to determine current system power consumption.
    2. Replace the failed power supply.
  2. If the power rail (A, B, C, D, E, F, G, and H) error was also detected, follow actions that are listed in the IBM System Storage SAN Volume Controller Hardware Maintenance Guide.
PCI An error occurred on a PCI card, a PCI bus, or on the system board. Another LED is lit next to a failing PCI slot.
  1. If the CONFIG LED is not lit, complete the following steps to correct the problem:
    1. Check the riser-card LEDs, the ServeRAID error LED, and the optional network adapter error LED to identify the component that caused the error.
    2. Check the system-error log for information about the error.
    3. If you cannot isolate the failing component by using the LEDs and the information in the system-error log, remove one component at a time. Restart the server after each component is removed.
    4. Replace the following components, in the order that is shown, restarting the server each time:
      • PCI riser cards
      • ServeRAID adapter
      • Optional network adapter
      • (Trained technician only) System board
    5. If the failure remains, contact your IBM® service representative.
  2. If the PCI LED and the CONFIG LED are lit, complete the following steps to correct the problem:
    1. Verify that the microprocessor that is installed is the correct part.
    2. Remove the high-power (>25 Watt) adapter.
    3. Check the system-error logs for information about the error. Replace any component that is identified in the error log.
NMI A nonmaskable interrupt occurred, or the NMI was pressed.
  1. Check the system-error log for information about the error.
  2. Restart the server.
CONFIG A hardware configuration error occurred.
  1. If the CONFIG LED and the PS LED are lit, the system issues an invalid power configuration error. Make sure that both power supplies installed in the server are of the same rating or wattage.
  2. If the CONFIG LED and the PCI LED are lit, complete the following steps to correct the problem:
    1. Verify that the microprocessor that is installed is the correct part.
    2. Remove the high-power (>25 Watt) adapter.
    3. Check the system-error logs for information about the error. Replace any component that is identified in the error log.
  3. If the CONFIG LED and the CPU LED are lit, complete the following steps to correct the problem:
    1. Verify that the microprocessor that is installed is the correct part.
    2. (Trained technician only) Replace the incompatible microprocessor.
    3. Check the system-error logs for information about the error. Replace any component that is identified in the error log.
  4. If the CONFIG LED and the MEM LED are lit, check the system-event log in the Setup utility or IMM2 error messages. Follow steps that are indicated in the IBM System Storage SAN Volume Controller Hardware Maintenance Guide.
  5. If the CONFIG LED and the HDD LED are lit, complete the following steps to correct the problem:
    1. Verify that the microprocessor that is installed is the correct part. If it is, check that the number of 2.5-inch hard disk drives that are installed is less than eight.
    2. Check the system-error logs for information about the error. Replace any component that is identified in the error log.
LINK Reserved.  
CPU When only the CPU LED is lit, a microprocessor failed. When both the CPU LED and the CONFIG LED are lit, the microprocessor configuration is invalid.
  1. If the CONFIG LED is not lit, a microprocessor failure occurs, complete the following steps:
    1. (Trained technician only) Make sure that the failing microprocessor and its heat sink, which are indicated by a lit LED on the system board, are installed correctly.
    2. (Trained technician only) Replace the failing microprocessor.
    3. For more information, contact your IBM service representative.
  2. If the CONFIG LED and the CPU LED are lit, the system issues an invalid microprocessor configuration error. Complete the following steps to correct the problem:
    1. Verify that the microprocessor that is installed is the correct part.
    2. (Trained technician only) Replace the incompatible microprocessor.
    3. Check the system-error logs for information about the error. Replace any component that is identified in the error log.
MEM When only the MEM LED is lit, a memory error occurred. When both the MEM and CONFIG LEDs are lit, the memory configuration is invalid.
Note: Each time that you install or remove a DIMM, you must disconnect the server from the power source; then, wait 10 seconds before you restart the server.
  1. If the CONFIG LED is not lit, the system might detect a memory error. Complete the following steps to correct the problem:
    1. Update the server firmware to the latest level.
    2. Reseat or swap the DIMMs with lit LED.
    3. Check the system-event log in the Setup utility or IMM error messages. Follow steps that are indicated in the IBM SAN Volume Controller Model 2145-DH8 Hardware Installation Guide.
    4. Replace the failing DIMM.
  2. If the MEM LED and the CONFIG LED are lit, check the system-event log in the Setup utility or IMM error messages. Follow steps that are indicated in the IBM SAN Volume Controller Model 2145-DH8 Hardware Installation Guide.
TEMP The system or the system component temperature exceeded a threshold level. A failing fan can cause the TEMP LED to be lit.
  1. Make sure that the heat sink is seated correctly.
  2. Determine whether a fan failed. If it has, replace it.
  3. Make sure that the room temperature is not too high.
  4. Make sure that the air vents are not blocked.
  5. Make sure that the heat sink or the fan on the adapter, or the optional network adapter is seated correctly. If the fan failed, replace it.
  6. For more information, contact your IBM service representative.
FAN A fan fails, is operating too slowly, or is removed. The TEMP LED might also be lit.
  1. Reseat the failing fan, which is indicated by a lit LED near the fan connector on the system board.
  2. Replace the failing fan.
BOARD An error occurred on the system board or the system battery.
  1. Check the LEDs on the system board to identify the component that caused the error. The BOARD LED can be lit due to any of the following reasons:
    • Battery
    • (Trained technician only) System board
  2. Check the system-error log for information about the error.
  3. Replace the failing component:
    • Battery
    • (Trained service technician only) System board
HDD A hard disk drive fails or is missing.
  1. If the CONFIG LED is not lit, complete the following steps to correct the problem:
    1. Check the LEDs on the hard disk drives for the drive with a lit status LED and reseat the hard disk drive.
    2. Reseat the hard disk drive backplane.
    3. If the error remains, replace the following components one at a time, in the order that is listed, restarting the server after each:
      1. Replace the hard disk drive.
      2. Replace the hard disk drive backplane.
    4. If the problem remains, contact your IBM service representative.
  2. If the HDD LED and the CONFIG LED are lit, complete the following steps to correct the problem:
    1. Check that the microprocessor that is installed is the correct part. If it is, check that the number of 2.5-inch hard disk drives that are installed is less than eight.
    2. Check the system-error logs for information about the error. Replace any component that is identified in the error log.